Test wall moderately thick, multilamellar, finely perforate, wall pores variably spaced in adult chambers, surface moderately to coarsely muricate or pustulose, never with a keel, raised sutures or imperforate peripheral margin. Test small to moderate in size, coiled in a very low to low trochospire, spiral side evolute, umbilical side mostly involute; chambers globular, never elongated radially, increasing slowly to moderately in size, with 4.5-7 in the final whorl; aperture a low interiomarginal, umbilical-extraumbilical arch that is bordered by a thick lip or flap that may extend partly into the umbilical region.

Distinguishing features: Test wall multilamellar, finely perforate, wall pores, surface moderately to coarsely muricate or pustulose; test coiled in a very low to low trochospire; chambers globular with 4.5-7 in the final whorl; aperture a low interiomarginal, umbilical-extraumbilical arch bordered by a thick lip or flap.

Geological Range: Last occurrence (top): within Danian Stage (61.61-66.04Ma, top in Danian stage). Data source: Total of range of species in this databaseFirst occurrence (base): within Albian Stage (100.50-112.95Ma, base in Albian stage). Data source: Total of range of species in this database

Plot of occurrence data:

Dec 2017 - Plotting of Neptune data has been re-enabled on the Mesozoic pages following revision of the age-models in Neptune. The data is, however, still very sparse for the Early Cretaceous